I'd like to see some old hexagonal strategy games like panzer general Master of Magic, Civ or Alpha Centauri ported to the DS. I think they would work very well with dual screens. You could move troops and micro manage with the stylus.
I bought an m3simply and an mp3adapter Lite (perfect) from www.bamboogaming.com. The price was the cheapest I could find on the net. The delivery took about 10 working days to arrive to Sweden.
You don't get the retail-package, all carts came bunched together in a jiffy envelope that at first...
I have also gotten a m3simply recently and spent easter setting it up using the stock usb adapter (the aluminum one) and I did not have any issues. Based on the reports here though, if you have a small micro-sd card and plan to write alot to the card then a proper reader/writer might be in order.
It is not that difficult to learn enough to play japanese games.
You just need to learn hiragana and katakana and then buy a copy of Nelson for the Kanjis and you should be able to figure out the games.